RUBBER COMPOSITION, RUBBER COMPOSITION FOR CRAWLERS, LUG PART RUBBER, AND RUBBER CRAWLER

摘要

A rubber composition which is obtained by blending: 100 parts by mass of an unvulcanized starting material rubber component that is mainly composed of a diene rubber; from 100 parts by mass to 500 parts by mass (inclusive) of a regenerated rubber per 100 parts by mass of the starting material rubber component; and a vulcanizing agent within the range of (blending amount of regenerated rubber (parts by mass)/200) × (1.0-3.0 parts by mass), zinc oxide within the range of (blending amount of regenerated rubber (parts by mass)/200) × (1.0-4.0 parts by mass) and carbon black within the range of (blending amount of regenerated rubber (parts by mass)/200) × (10.0-20.0 parts by mass), respectively relative to a specific base blend. This rubber composition enables the achievement of a rubber which has excellent wear resistance and excellent tensile strength even in cases where a larger amount of a regenerated rubber is blended therein in comparison to conventional rubber compositions.